Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 
, g(x) = 3x - 2
A. Yes, no
B. No, yes
C. Yes, yes
D. No, no
Answer: C
Mathematics
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Factor by grouping.20x6 + 16x3y4 - 15x3y4 - 12y8
A. (4x3 - 3y)(5x3 + 4y8) B. (20x3 - 3y4)(x3 + 4y4) C. (4x3 + 3y4)(5x3 - 4y4) D. (4x3 - 3y4)(5x3 + 4y4)
Mathematics
Write the product as a sum or difference containing only sines or cosines.cos(6?) cos(5?)
A. cos2(30?2)
B. 
[cos(11?) - sin ?]
C. 
[ cos ? + cos(11?)]
D. 
[cos(11?) - cos ?]
Mathematics
Solve the system by the elimination method. x + 2y = -4 8x + 1y = 58
A. {(8, -6)} B. {(-8, -5)} C. {(7, -5)} D. ?
Mathematics
Divide. 
A. 1488 B. 1486 C. 1486 R 1 D. 1488 R 1
Mathematics